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Brian Urlacher has reportedly been fined for the second time in as many weeks. (Hannah Foslien/Getty Images)

Chicago Bears linebacker Brian Urlacher has been fined for the second time in as many weeks.

According to tweets Thursday morning from Vaughn McClure of The Chicago Tribune, Urlacher said the fine is for $21,000 and that he will appeal it.

The report was also posted to NFL.com by Marc Sessler, though it hasn't yet been confirmed by the NFL. The fine is likely for his horse collar of Seattle Seahawks running back Leon Washington in the Bears' 23-17 loss on Sunday. Urlacher was flagged on the play but the NFL has yet to confirm a punishment.

Urlacher, 34, is also appealing a $15,750 fine issued to him last week for a horse collar of Minnesota Vikings running back Adrian Peterson. Neither Peterson nor Washington sustained injuries on the takedown from Urlacher. Per NFL policy, the second offense for a horse collar is $31,500 but the league has the option to increase or decrease the amount of money paid by the player for that second offense.

Urlacher suffered a strained right hamstring in the loss to Seattle on Sunday and is expected to miss two to four weeks.